(1r,2s)-1-氨基-2-乙烯-环丙烷羧酸乙酯 、
(2S,4R)-1-[(2S)-2-(cyclopentyloxycarbonylamino)-3-methylbutanoyl]-4-[2-(5,6-dihydro-4H-cyclopenta[d][1,3]thiazol-2-yl)-7-methoxyquinolin-4-yl]oxypyrrolidine-2-carboxylic acid 在
4-二甲氨基吡啶 、
Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 6.5h,
以86%的产率得到ethyl (1R,2S)-1-[[(2S,4R)-1-[(2S)-2-(cyclopentyloxycarbonylamino)-3-methylbutanoyl]-4-[2-(5,6-dihydro-4H-cyclopenta[d][1,3]thiazol-2-yl)-7-methoxyquinolin-4-yl]oxypyrrolidine-2-carbonyl]amino]-2-ethenylcyclopropane-1-carboxylate